Any rock or hard rock band from 1983 to 1990 that wore spandex and wailed about chicks & cars. Also, hair was either mullet or highly gooed with hairspray. Glacier washed denim and leather were the fashion of butt rock.

1) A cranked up, stiff non-syncopated drum beat. The snare drum must be very loud. This is a result of a music industry in the 1980’s that wanted to distance itself from any of the “boring” improvisational aspects of hard rock music.
2) Squealing lead guitar that lacks any semblance of feeling
and may be dropped into any other song on recording by said band.
3) Angry lyrics about teachers, cops and parents who are
always f-ing with you. Sometimes even librarians may be a target in videos.
4) Lyrics about being high.
5) Band members must laugh incessantly at all of their own responses to interviewer's questions. (David Lee Roth started this trend but he actually was funny.)

Any music that was produced using predictable assembly line style power-chord structures and lyrics with absolutely zero forethought other than rhyme and easy mass-identification. If a band churns out more than one album per year, odds are favorable that they are a butt rock band. Bonus points if the lead singer attempts to emulate Scott Stapp because although Creed is not (quite) butt rock, there would be no butt rock without them. Pioneers of butt rock include Nickelback, Puddle of Mudd, Three Days Grace, Buck Cherry, and Hinder. The song "The New Sh!t" from Marylin Manson's "Golden Age of Grotesque" album can be interpereted as a poignant critique of butt rock.

It only took me one listen to completely digest that new Hinder tune. Butt rock goes down so smooth! I don't have to think at all!

I think Butt Rock was coined by older Gen-Xers with a definition like that given above by the writer "Reformed Butt Rocker": Butt Rock is plodding 1970s boogie rock, music of the sort that the characters in the movie "Dazed and Confused" might have listened to. For the people born a decade later, the term came to mean the working class rock of the 1980s--this being the heavy metal that was mainstream enough to get played on MTV in prime time. The common denominator is that the term derides the music that is associated with lower-class stoners, football hooligans and their American equivalents, and other uncouth types. The original definition may be antiquated, but it's still valuable knowledge, linguistically speaking.

Foghat's "Slow Ride" - the Platonic ideal of a Butt Rock song, released during the (original) Butt-Rock peak of 1975.